I think you have just dig yourself into more suggesting that Berg is Petrus romanus, and There won’t be a holy pope, I already picked up on this when I saw the part about the ancient of days and you said it was describing the holy pope, the ancient of days is a title reserved for God alone

1. I did not suggest the Bergoglio is Petrus Romanus. I said he is the Antichrist. Petrus Romanus is not the Antichrist. St. Malachy's prophecy does not mention the Antichrist. It is called "the Prophecy of the Popes." Other prophecies discuss the Antichrist, not this one.

Petrus Romanus is the name given by St. Malachy to him who others call "the holy Pope" or "the angelic Pope." Who is he? It is supposed to be somewhat of a mystery. Those "with eyes to see" will see it when it happens. It will probably be a supernatural manifestation. He will not just be another Pope who is elected in a normal conclave.

2. Here is how Daniel describes the "ancient of days" in Daniel 7:13:

"I beheld therefore in the vision of the night, and lo, one like the son of man came with the clouds of heaven, and he came even to the Ancient of days: and they presented him before him.

Notice that Daniel says "one like the son of man came with the clouds of heaven." Then it says "he came even to the Ancient of days." So, clearly the "son of man" is not the same person as the "Ancient of days," right?

And Jesus is the "son of man," right? And Jesus "comes with the clouds of heaven" at the Second Coming, right? And Jesus is God, right? Therefore, the "Ancient of days" is not God. Jesus, the Son of Man, does not come to Himself "on the clouds of heaven." God is already in heaven.

So the "Ancient of days" mentioned by Daniel is someone who is not God or the Son of Man, Jesus. Who is he? He's the Angelic (Holy) Pope. Here is how Daniel describes him in Chapter 7:21-22

21 I beheld, and lo, that horn made war against the saints, and prevailed over them, 22 Till the Ancient of days came and gave judgment to the saints of the most High, and the time came, and the saints obtained the kingdom.

The "horn" is the "Little Horn," aka the Antichrist. The "Ancient of days" comes AFTER the Antichrist has "made war against the saints." And the "Ancient of days" then hands over the kingdom to "the saints." This is the New Heaven and New Earth described in Apocalypse 21.

If you have a problem with them being actual (formal) popes because you think they were heretics, fine. But this doesn't change the prophecy. The prophecy is talking about them being the "kings" of the Vatican City-State. The Pope is the Bishop of Rome AND the "king" of the Vatican City-State.

Even if those men you mention were defective in some way and could not truly be Pope, they were still canonically-elected to be the "king" of the Vatican City-State. Bergoglio's election as unlawful according to Universi Dominici Gregis. He is a usurper, a fraudulent "king."

6. In addition, [by this Our Constitution, which is to remain valid in perpetuity We enact, determine, decree and define:] that if ever at any time it shall appear that any Bishop, even if he be acting as an Archbishop, Patriarch or Primate; or any Cardinal of the aforesaid Roman Church, or, as has already been mentioned, any legate, or even the Roman Pontiff, prior to his promotion or his elevation as Cardinal or Roman Pontiff, has deviated from the Catholic Faith or fallen into some heresy:

(i) the promotion or elevation, even if it shall have been uncontested and by the unanimous assent of all the Cardinals, shall be null, void and worthless;(ii) it shall not be possible for it to acquire validity (nor for it to be said that it has thus acquired validity) through the acceptance of the office, of consecration, of subsequent authority, nor through possession of administration, nor through the putative enthronement of a Roman Pontiff, or Veneration, or obedience accorded to such by all, nor through the lapse of any period of time in the foregoing situation;(iii) it shall not be held as partially legitimate in any way;(iv) to any so promoted to be Bishops, or Archbishops, or Patriarchs, or Primates or elevated as Cardinals, or as Roman Pontiff, no authority shall have been granted, nor shall it be considered to have been so granted either in the spiritual or the temporal domain;(v) each and all of their words, deeds, actions and enactments, howsoever made, and anything whatsoever to which these may give rise, shall be without force and shall grant no stability whatsoever nor any right to anyone;(vi) those thus promoted or elevated shall be deprived automatically, and without need for any further declaration, of all dignity, position, honour, title, authority, office and power.7. Finally,

[by this Our Constitution, which is to remain valid in perpetuity, We] also [enact, determine, define and decree]: that any and all persons who would have been subject to those thus promoted or elevated if they had not previously deviated from the Faith, become heretics, incurred schism or provoked or committed any or all of these, be they members of anysoever of the following categories: the Cardinals, even those who shall have taken part in the election of this very Pontiff previously deviating from the Faith or heretical or schismatical, or shall otherwise have consented and vouchsafed obedience to him and shall have venerated him;Castellans, Prefects, Captains and Officials, even of Our Beloved City and of the entire Ecclesiastical State, even if they shall be obliged and beholden to those thus promoted or elevated by homage, oath or security; shall be permitted at any time to withdraw with impunity from obedience and devotion to those thus promoted or elevated and to avoid them as warlocks, heathens, publicans, and heresiarchs (the same subject persons, nevertheless, remaining bound by the duty of fidelity and obedience to any future Bishops, Archbishops, Patriarchs, Primates, Cardinals and Roman Pontiff canonically entering).   To the greater confusion, moreover, of those thus promoted or elevated, if these shall have wished to prolong their government and authority, they shall be permitted to request the assistance of the secular arm against these same individuals thus promoted or elevated; nor shall those who withdraw on this account, in the aforementioned circuмstances, from fidelity and obedience to those thus promoted and elevated, be subject, as are those who tear the tunic of the Lord, to the retribution of any censures or penalties.by the way roncalli was declared suspect of heresy twice, and didnt defend himself meaning he was a twice legally sentenced heretic. Universi dominici gregis was written by the heretic koran kisser wojtyla. their elections were invalid. they were neither bishops of rome or kings of the vatican they were and are usurpers, just like the hanoverians[/list]

Well, I think St. Malachi had included various AntiPopes in his list, so why not in other contexts?  If you're a privationist also, then they'd still hold the Kingship of Rome, or at least loosely, as even the Dimond Brothers believe (and they're diehard sedevacantists).

St Malachi includes some but not all AntiPopes, which is a problem because then what's the criterion for inclusion?

Daniel Chapter 7 explains in more detail the Beast from the Sea (mentioned in Apocalypse 13):


As Daniel explains in Chapter 2, these Beasts are "Kingdoms" or "Regimes." Here is how he describes them:

And here is Daniel Chapter 4, explaining just the change from Pius XII to John XXIII. You will note that he says "Let the heart be changed from man's, and let the beast's heart be given to him; and let seven times pass over him." This is referring to Pius XII [the man] and John XXIII [the bear]. The "seven times" is 70 years from 1959 to 2029.
So, as I mentioned in my earlier post, the "seven heads" start with the founding of the Vatican City State with the Lateran Treaty in 1929. Daniel describes Pius XI and Pius XII as "golden." They are like a "lioness" and a "man." The imagery is generally positive. It is with the following regimes where we see the more negative descriptions.

How do I know that Bergoglio arises during the period of the Ten Horns? Because he himself said that he was ruling with his Council of Cardinal Advisors (the C9) when he usurped the papacy (https://en.wikipedia.org/wiki/Council_of_Cardinals).

That was part of the deal. They would "elect" Bergoglio in a false conclave, if he allowed them to share power with him. He removed 3 of the original Cardinals in 2018 because they were blocking his "reforms." Daniel Chapter 7 mentions that "three of the first horns were plucked up at the presence thereof." Here is a news article about those three Cardinals getting canned:
https://www.catholicnewsagency.com/news/40127/three-cardinals-dropped-from-c9-as-reform-process-nears-end

To your second question about St. Peter. It is possible that it could refer to St. Peter. But the description of the Holy Pope in private revelations does not fit St. Peter. The Holy Pope will, like Jesus before him, be previously rejected by his people. "The stone which the builders rejected; the same is become the head of the corner." The Holy Pope will play the role of Jesus Christ in the resurrection of the mystical body of Christ in the end times. As it was at the beginning of the era, so it will be at the end of the era.

Pope Pius XI vindicated. Seventh head is Prevost. If he gets a sucessor and isn’t teh false prophet it will be Pius XII vindicated too

doesn't the name "peter" and some type of roman/italian heritage or ancestry have to be significant in some way?

The "Ancient of Days" could be Enoch or Elias.  These two, when they battle against the antichrist will likely be consecrated bishops.  One of the Fathers says that Enoch will put the Blessed Sacrament on top of the Ark of the Covenant and many Jews will convert. 

It is also my understanding that the antichrist will have, as it were, 12 anti-apostles who will prepare his advent.